fix(ESPAT-2189): Fixed a potential uart tx voltage fluctuation issue …

…during light-sleep
espressif · Dec 31, 2024 · b2b3f79 · b2b3f79
1 parent 953399d
commit b2b3f79
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/main/interface/uart/at_uart_api.c b/main/interface/uart/at_uart_api.c
@@ -243,6 +243,9 @@ void at_uart_workaround(void)
     // a workaround for uart1 outputs uninterrupted data during light-sleep
     PIN_SLP_INPUT_ENABLE(GPIO_PIN_MUX_REG[g_uart_port_pin.rx_pin]);
     gpio_sleep_set_pull_mode(g_uart_port_pin.rx_pin, GPIO_PULLUP_ONLY);
+
+    // a workaround for uart1 tx voltage fluctuation issue during light-sleep
+    gpio_sleep_sel_dis(g_uart_port_pin.tx_pin);
 }
 
 void at_uart_config_init(uart_config_t *config)